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Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.

You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.

David Humphrey

David Humphrey is President, C.E.O., and owner of Kirkman Group, Inc., a group of companies including Kirkman®, a nutraceutical company, Kirkman Labs, a pharmaceutical company, Rose Laboratory and he is co-owner of Purity Laboratories, Inc, an environmental laboratory.

Kirkman® and Kirkman Labs celebrate 62 years as manufacturers of quality products. Humphrey purchased Kirkman from his father in 2001. Kirkman® is located in Lake Oswego, OR and Reno, NV. Kirkman Labs and Purity Laboratories are in Portland Oregon. Kirkman® was named one of the "Top 100 Companies to Work for in Oregon" and also one of the "Top 100 Green Companies in Oregon."

Humphrey is also an attorney and entrepreneur who founded several other large companies, including Maui Gold, Inc., formerly, Honolulu Premium Products that was named by Inc. Magazine to its Inc. 500 list of fastest growing companies in the nation for four consecutive years. He also founded the Humphrey corporation that manufactured most of the frisbee type flying saucers in the world under his ownership.

Humphrey graduated from Lewis and Clark College in Portland, Oregon and the University of Washington Law School. He became a member of MENSA International during law school. He also founded a public interest law firm called WashPIRG based in Seattle, Washington. WashPIRG was initially funded by an annual contribution from over 250,000 college and university students in the State of Washington. It became the model for Ralph Nader's PIRG organizations across the county. This year, WashPIRG is celebrating its 30th year of public service. He also taught business and marketing at Hawaii Pacific University in Honolulu, Hawaii.